Mississippi Highway 311 is a state highway located in Marshall County, Mississippi, United States. The route runs 12.960 mi (20.857 km) from MS 7 in Holly Springs north to U.S. Route 72 in Mount Pleasant. The route is a two-lane undivided road its entire length and passes through rural areas. MS 311 was designated onto its current alignment in 1957, and was fully paved from a gravel road by the 1960s.